Cap unit and container with cap

Abstract

The present invention provides a cover unit that can effectively maintain the airtightness of the liquid passage. The cover unit comprises: a cover body (8) which is installed on the neck (2c) of the upper open container body (2) and has a liquid passage (12) communicating with the inside of the container body; a cover body (9) which is detachably installed relative to the cover body (8) and has an outer cover (17) covering the outside of the cover body and a middle plug (18) that blocks the liquid passage (12) when embedded in the inside of the cover body (8); a water-stopping washer (14) which seals the inside of the container body and the cover body when installed on the outer periphery of the lower end side of the cover body; and a cover washer (21) which seals the inside of the cover body (8) and the middle plug (18) when installed on the outer periphery of the middle plug (18), the water-stopping washer (14) having a lower surface protrusion (14c) that blocks the gap (S) between the middle plug (18) and the cover body.

Description

Technical Field

[0001] This invention relates to lid units and lidded containers. Background Technology

[0002] Conventionally, there exists a covered container having a cap unit (plug) that can be easily installed and removed from the container body with an upper opening. In addition, the cap unit has a cap body that is installed at the neck of the container body with an upper opening and has a liquid passage hole that communicates with the inside of the container body, and a cap body that opens and closes the liquid passage hole (for example, see Patent Document 1 below).

[0003] Specifically, Patent Document 1 discloses a structure in which an outer cover covering the outer side of the cover body and a middle plug that blocks the liquid passage when embedded in the inner side of the cover body are connected by an internal thread portion provided on the inner periphery of the cover body and an external thread portion provided on the outer periphery of the middle plug, so that the cover body can be freely installed and removed from the cover body.

[0004] Furthermore, Patent Document 1 discloses a structure in which a water-stopping gasket installed on the outer periphery of the lower end of the cap body seals the inner side of the container body from the cap body, and a cap gasket installed on the outer periphery of the middle plug seals the inner side of the cap body from the middle plug.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2014-162544

[0006] However, in the aforementioned existing lidded containers, when the container body is turned upside down and inverted, there is a possibility that the beverage (liquid) contained in the container body may leak through the gap between the lid body and the stopper, passing through the lid gasket and into the inside of the liquid inlet.

[0007] In particular, when the container falls upside down, the beverage inside may press against the cap gasket due to the impact of the collision with the ground, causing the cap gasket to shift from the outer periphery of the stopper. In this case, it is difficult to maintain a proper seal of the liquid inlet using the cap gasket. Summary of the Invention

[0008] The present invention was made in view of the existing situation, and its object is to provide a cap unit that can maintain the airtightness of the liquid passage and a capped container that can further improve the ease of use by having such a cap unit.

[0009] To achieve the above objectives, the present invention provides the following solutions.

[0010] [1] A cover unit, characterized in that it comprises:

[0011] The cap body is detachably installed on the neck of the container body with an upper opening, and is provided with a liquid passage hole communicating with the inside of the container body.

[0012] The cover body is detachably installed relative to the cover body and is provided with an outer cover covering the outer side of the cover body and a middle plug that blocks the liquid passage when embedded in the inner side of the cover body.

[0013] A water-stop gasket, which, when installed on the outer periphery of the lower end side of the cover body, seals the inner side of the container body with the cover body; and

[0014] The cover gasket, when installed on the outer periphery of the middle bolt, seals the inner side of the cover body against the middle bolt.

[0015] The aforementioned water-stopping gasket has a protruding portion on its lower surface that seals the gap between the aforementioned middle bolt and the aforementioned cover body.

[0016] [2] The cover unit described in [1] above is characterized in that,

[0017] The aforementioned protrusion on the lower surface is configured to protrude in the direction of diameter reduction than the lower end of the aforementioned cover body.

[0018] [3] The cover unit described in [2] above is characterized in that,

[0019] With the aforementioned plug blocking the aforementioned fluid passage, the aforementioned protrusion on the lower surface is in contact with the bottom wall portion of the lower surface constituting the aforementioned plug throughout the entire circumference.

[0020] [4] The cover unit described in [2] or [3] above is characterized in that,

[0021] The aforementioned lower surface protrusion has a curved portion formed by its front end side bending upwards.

[0022] [5] The cover unit described in [2] or [3] above is characterized in that,

[0023] The aforementioned protrusion on the lower surface has a curved portion formed by its front end side bending downwards.

[0024] [6] A cover unit, characterized in that it comprises:

[0025] The cap body is detachably installed on the neck of the container body with an upper opening, and is provided with a liquid passage hole communicating with the inside of the container body.

[0026] A cover body, which is detachably mounted to the cover body, and is provided with an outer cover covering the outer side of the cover body and a middle plug that seals the liquid passage when embedded inside the cover body; and

[0027] The cover gasket, when installed on the outer periphery of the middle bolt, seals the inner side of the cover body against the middle bolt.

[0028] The aforementioned cover gasket is installed in a manner that fits into the annular groove provided on the outer periphery of the aforementioned bolt.

[0029] The groove has an upper wall surface opposite to the upper surface of the cover gasket, a lower wall surface opposite to the lower surface of the cover gasket, and an inner wall surface that contacts the inner circumferential surface of the cover gasket between the upper wall surface and the lower wall surface.

[0030] The aforementioned upper wall surface is configured to protrude more than the aforementioned lower wall surface in the direction of diameter expansion.

[0031] [7] The cover unit described in [6] above is characterized in that,

[0032] The aforementioned cover gasket has an elastic flange portion protruding from its outer periphery in the direction of diameter expansion.

[0033] By making the elastic flange in close contact with the inner side of the cover body, a seal is formed between the inner side of the cover body and the central bolt.

[0034] [8] The cover unit described in [7] above is characterized in that,

[0035] The outer peripheral end of the upper wall is located on the outer peripheral side of the base end of the elastic flange and on the inner peripheral side of the front end of the elastic flange.

[0036] [9] The cover unit described in [7] or [8] above is characterized in that,

[0037] The outer peripheral end of the lower wall is located on the inner peripheral side than the base end of the elastic flange.

[0038]

[10] The cover unit described in any one of [1] to [3] and [6] to [8] above is characterized in that,

[0039] The cover body can be easily installed and removed from the cover body by screwing together the internal thread portion provided on the inner periphery of the cover body and the external thread portion provided on the outer periphery of the bolt.

[0040]

[11] A lidded container, characterized in that it comprises:

[0041] The cover unit described in any of [1] to

[10] above; and

[0042] The container body for mounting the aforementioned cover unit.

[0043]

[12] The lidded container described in

[11] above is characterized in that,

[0044] The container body described above has a vacuum insulation structure.

[0045] As described above, according to the present invention, it is possible to provide a cap unit that can maintain the airtightness of the liquid passage and a capped container that can further improve ease of use by having such a cap unit. Attached Figure Description

[0046] Figure 1 This is a cross-sectional view showing the structure of a covered container having a lid unit according to an embodiment of the present invention.

[0047] Figure 2 Viewed from below Figure 1 The diagram shows a three-dimensional view of the structure of the cover unit.

[0048] Figure 3 It means Figure 1 The diagram shows a bottom view of the structure of the cover unit.

[0049] Figure 4 Viewed from above Figure 1 The exploded perspective view of the structure of the cover unit is shown.

[0050] Figure 5 Viewed from below Figure 1 The exploded perspective view of the structure of the cover unit is shown.

[0051] Figure 6 It means Figure 1 A sectional view of the main part of the inverted container shown.

[0052] Figure 7 This is a cross-sectional view showing other structures of the water-stop washer.

[0053] Figure 8 It means that it is installed Figure 7 The cross-sectional view of the cover unit of the water-stop gasket shown.

[0054] Figure 9 This is a cross-sectional view showing other structures of the water-stop washer.

[0055] Figure 10 It means that it is installed Figure 9 The cross-sectional view of the cover unit of the water-stop gasket shown.

[0056] Explanation of reference numerals in the attached figures

[0057] 100…Lidded container; 1…Lid unit; 2…Container body; 6…First internal thread; 7…Protrusion; 8…Lid body; 9…Lid body; 10…Outer cylinder component; 11…Inner cylinder component; 12…Liquid passage; 13…First external thread; 14, 14A, 14B…Water-stopping washer; 14c…Lower surface side protrusion; 14d…Upward bending part; 14e…Downward bending part; 15…Second internal thread; 17…Outer cover; 18…Middle plug; 20…Second external thread; 21…Lid washer; 21a…Elastic flange; 22…Groove; 22a…Upper wall surface; 22b…Lower wall surface; S…Gap. Detailed Implementation

[0058] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0059] As one embodiment of the present invention, for example, for having Figures 1-6 The lidded container 100 of the lid unit 1 shown will be described.

[0060] also, Figure 1 This is a cross-sectional view showing the structure of a covered container 100 having a cover unit 1. Figure 2 This is a perspective view of the structure of cover unit 1 from below. Figure 3 This is a bottom view showing the structure of cover unit 1. Figure 4 This is an exploded perspective view of the structure of cover unit 1 from the top. Figure 5 This is an exploded perspective view of the structure of cover unit 1 as seen from below. Figure 6 This is a sectional view of the main part showing the inverted state of the covered container 100.

[0061] like Figure 1 As shown, the lidded container 100 of this embodiment includes a lid unit 1 of this embodiment and a container body 2 for the lid unit 1 to be detachably installed. The lidded container 100 is a beverage container capable of keeping the beverage (liquid) contained in the container body 2 warm or cold through the container body 2 having a vacuum insulation structure.

[0062] Specifically, the container body 2 is composed of a double-layered container, which has a bottomed cylindrical outer container 3 made of, for example, stainless steel, and an inner container 4, with their openings joined together so that the inner container 4 is housed inside the outer container 3. Furthermore, a vacuum insulation layer 5 is provided between the outer container 3 and the inner container 4. The vacuum insulation layer 5 can be formed, for example, by blocking an exhaust hole located at the center of the bottom surface of the outer container 3 within a chamber that has been depressurized (evacuated) to a high vacuum.

[0063] The container body 2 has: a generally circular bottom portion 2a, a generally cylindrical cylindrical body portion 2b that rises from the outer periphery of the bottom portion 2a, and a generally cylindrical neck portion 2c that narrows at the upper side of the cylindrical body portion 2b. In addition, the upper end of the neck portion 2c has a circular opening as the upper opening portion 2d of the container body 2.

[0064] The inner circumferential surface of the neck portion 2c is narrower than the inner circumferential surface of the cylindrical body portion 2b. Furthermore, a first internal thread portion 6 is provided on the inner circumferential surface of the neck portion 2c. The first internal thread portion 6 is composed of thread teeth that spirally protrude downwards from the upper end side of the neck portion 2c. Additionally, a ring-shaped protrusion 7 is provided below the first internal thread portion 6, protruding throughout the entire circumference of the inner circumferential surface of the container body 2.

[0065] Furthermore, the lidded container 100 of this embodiment has a generally cylindrical shape, but there are no particular limitations on the shape of the lidded container 100, and appropriate changes can be made according to size, appearance design, etc. In addition, the outer peripheral surface of the container body 2 can also be coated or printed.

[0066] like Figures 1-5 As shown, the cover unit 1 of this embodiment constitutes a plug that seals the upper opening 2d of the container body 2, and includes a cover body 8 and a cover 9 that is detachably installed on the cover body 8.

[0067] The cover body 8 has a cylindrical outer cylinder component 10 and an inner cylinder component 11, which are made of a heat-resistant resin such as polypropylene (PP). Alternatively, the cover body 8 may be a structure in which the outer cylinder component 10 and the inner cylinder component 11 are integrally formed.

[0068] In the cover body 8, the inner cylinder component 11, which penetrates the outer cylinder component 10, is integrally installed onto the outer cylinder component 10 by engaging the locking protrusion 10a provided on the inner peripheral surface of the outer cylinder component 10 with the locking recess 11a provided on the outer peripheral surface of the inner cylinder component 11. Furthermore, for the outer cylinder component 10, in addition to PP as described above, thermoplastic resins such as acrylonitrile butadiene styrene (ABS) can also be used.

[0069] A liquid passage hole 12, serving as a drinking or pouring port, is provided on the inner side of the inner cylinder component 11 (cap body 8). The liquid passage hole 12 has: a tapered hole portion 12a that gradually narrows from the upper end of the inner cylinder component 11 (cap body 8) downwards; a first straight hole portion 12b that forms the same diameter from the lower end of the tapered hole portion 12a downwards; a stepped portion 12c that narrows in diameter from the lower end of the first straight hole portion 12b compared to the first straight hole portion 12b; and a second straight hole portion 12d that forms the same diameter from the stepped portion 12c downwards.

[0070] A first external thread portion 13 is provided on the outer peripheral surface of the inner cylinder component 11, which is located below the outer cylinder component 10. The first external thread portion 13 is composed of thread teeth that spirally protrude upward from the lower end side of the inner cylinder component 11. As a result, the cap body 8 can be easily installed and removed from the neck portion 2c of the container body 2 by screwing the thread teeth constituting the first internal thread portion 6 and the first external thread portion 13 together.

[0071] A water-stop gasket 14 is detachably installed on the outer periphery of the lower end side of the inner cylinder component 11 (cover body 8). The water-stop gasket 14 is an annular sealing component that seals the inner side of the container body 2 and the cover body 8. It is made of elastic components such as heat-resistant rubber or elastomers.

[0072] A flange 11b is provided on the outer periphery of the lower end side of the inner cylinder component 11, protruding in the direction of diameter expansion. On the other hand, an annular fitting recess 14a is provided all around the inner periphery of the water-stopping washer 14. With the flange 11b fitted into its fitting recess 14a, the water-stopping washer 14 is fitted and installed all around the outer periphery of the lower end side of the inner cylinder component 11.

[0073] Furthermore, multiple (two in this embodiment) elastic flange portions 14b are provided on the outer peripheral surface of the water-stopping gasket 14 in a manner that protrudes in the direction of diameter expansion and are arranged vertically. When the cap body 8 is installed on the neck portion 2c of the container body 2, the water-stopping gasket 14 becomes a state in which the elastic flange portions 14b elastically deform and are in close contact with the protrusion 7 of the container body 2 throughout the entire circumference. As a result, a seal can be formed between the protrusion 7 (the inner side of the container body 2) and the inner cylinder component 11 (cap body 8).

[0074] Furthermore, the water-stopping gasket 14 preferably has its lower elastic flange portion 14b in contact with the top of the protrusion 7, and its upper elastic flange portion 14b in contact with the entry side of the protrusion 7. This improves the airtightness between the protrusion 7 (the inner side of the container body 2) and the inner cylinder component 11 (the cover body 8).

[0075] On the other hand, the water-stop washer 14 can be removed from the outer periphery of the lower end side of the inner cylinder component 11 (cover body 8) by elastically deforming (stretching). As a result, the water-stop washer 14 and the cover body 8 can be cleaned separately, thereby maintaining hygiene between the water-stop washer 14 and the cover body 8.

[0076] Furthermore, the water-stopping washer 14 is not limited to the shape described above. For example, the number of elastic flange portions 14b is not limited to the two described above, and one or more can also be formed. In addition, the water-stopping washer 14 is not limited to the structure provided with the above-described elastic flange portions 14b, and its shape and other aspects can be appropriately modified.

[0077] The outer cylindrical component 10 (cap body 8) has an outer peripheral surface that is coplanar with the cylindrical portion 2b of the container body 2, and is generally cylindrical. Furthermore, a second internal thread portion 15 is provided on the inner peripheral surface of the inner cylindrical component 11 (cap body 8). The second internal thread portion 15 is composed of multiple (four in this embodiment) threaded protrusions protruding from the position where the second straight hole portion 12d is formed in the inner cylindrical component 11. Additionally, multiple gaps 15a are provided between these multiple threaded protrusions to allow beverage (liquid) remaining inside the inner cylindrical component 11 (cap body 8) to return to the container body 2.

[0078] The inner cylinder component 11, passing over the upper side of the outer cylinder component 10, forms a wide opening 16 that gradually widens towards the upper end, corresponding to the shape of the tapered hole 12a. This allows for easy drinking or easy filling of beverages (liquids) flowing out from the liquid inlet 12.

[0079] The cover 9 opens and closes the liquid passage 12, and has an outer cover 17 made of heat-resistant resin such as PP and a middle plug 18.

[0080] The outer cover 17 covers the outer side of the cover body 8 and has a peripheral wall portion 17a formed in a generally cylindrical shape, which is coplanar with the outer peripheral surface of the outer cylinder member 10 (cover body 8), and a top wall portion 17b covering the upper part of the peripheral wall portion 17a. The middle plug 18 is the portion that blocks the liquid passage hole 12 in a state of being embedded inside the cover body 8, and has a generally circular bottom wall portion 18a and a peripheral wall portion 18b that rises in a generally cylindrical shape from the periphery of the bottom wall portion 18a.

[0081] The center bolt 18 is located at the inner center of the outer cover 17, and the peripheral wall portion 18b is integrally mounted to the lower center of the top wall portion 17b by means of welding or the like. Additionally, a heat-insulating material 19 is disposed inside the center bolt 18. Alternatively, a structure can be formed in which air (space) serves as a heat-insulating layer inside the center bolt 18 instead of the heat-insulating material 19.

[0082] A second external thread portion 20 is provided on the outer peripheral surface of the peripheral wall portion 18b (middle bolt 18). The second external thread portion 20 is composed of a pair of threaded grooves that are spirally cut from the lower end of the peripheral wall portion 18b upwards. Thus, the middle bolt 18 (cover body 9) is installed on the inner peripheral portion of the inner cylinder component 11 (cover body 8) by screwing the threaded protrusions constituting the second internal thread portion 15 into the threaded grooves constituting the second external thread portion 20 respectively.

[0083] Furthermore, the second external thread portion 20 is composed of two threads that are complementary to each other. When using two threads, the cover body 9 can be installed or removed from the cover body 8 with less rotation (approximately 160° in this embodiment).

[0084] A cover gasket 21 is detachably installed on the outer periphery of the central plug 18. The cover gasket 21 is an annular sealing component that seals the liquid passage hole 12 (inner side of the cover body 8) and the central plug 18. Similar to the aforementioned water-stop gasket 14, it is made of elastic components such as heat-resistant rubber or elastomers.

[0085] On the other hand, an annular groove 22 is provided all around the outer circumference of the peripheral wall portion 18b (middle bolt 18). The cover gasket 21 is fitted and installed in the groove 22 all around the circumference.

[0086] Multiple (two in this embodiment) elastic flange portions 21a are provided on the outer peripheral surface of the cover gasket 21 in a manner that protrudes in the direction of diameter expansion and are arranged vertically. When the cover body 9 is installed onto the cover body 8, the cover gasket 21 is in a state where the elastic flange portions 21a elastically deform and are in close contact with the liquid passage hole 12 all around its circumference. As a result, the liquid passage hole 12 (inner side of the cover body 8) and the central plug 18 can be sealed.

[0087] Furthermore, when the cap gasket 21 is used to seal the liquid passage 12 with the central plug 18, it is preferably in a state where the elastic flange portion 21a is in close contact with the first straight hole portion 12b near the boundary between the tapered hole portion 12a and the first straight hole portion 12b. Thus, when the cap body 9 is removed from the cap body 8, the liquid passage 12 (inner side of the cap body 8) can be opened between the central plug 18 by simply moving the elastic flange portion 21a slightly from the state of being in close contact with the first straight hole portion 12b towards the tapered hole portion 12a.

[0088] On the other hand, the cover gasket 21 can be removed from the groove 22 by elastically deforming (stretching). As a result, the cover gasket 21 and the cover body 9 can be cleaned separately, thereby maintaining hygiene between the cover gasket 21 and the cover body 9.

[0089] Furthermore, the cover gasket 21 is not limited to the shape described above. For example, the number of elastic flange portions 21a is not limited to the two described above, and one or more can also be formed. In addition, the cover gasket 21 is not limited to the structure provided with the elastic flange portions 21a described above, and its shape and other aspects can be appropriately modified.

[0090] However, in the cover unit 1 of this embodiment, as Figure 1 As shown, the water-stopping washer 14 has a lower surface protrusion 14c that seals the gap S between the central plug 18 and the cover body 8.

[0091] The lower surface protrusion 14c is configured to protrude in the constriction direction from the lower end of the cap body 8. As a result, the lower surface protrusion 14c is in full circumferential contact with the outer periphery of the bottom wall portion 18a of the middle plug 18 when the middle plug 18 blocks the liquid passage 12.

[0092] Furthermore, regarding the water-stopping effect resulting from the contact between the lower surface side protrusion 14c and the outer periphery of the bottom wall portion 18a, it is not necessary to completely seal it; it is sufficient to have water-stopping effect to the extent that the beverage does not fill the space formed between the stopper 18, the cap body 8, the cap washer 21, and the lower surface side protrusion 14c when it falls.

[0093] In the cover unit 1 of this embodiment, as Figure 6 As shown, even when the container body 2 is inverted by reversing the lidded container 100, the protrusion 14c on the lower surface side blocks the gap S between the plug 18 and the lid body 8, thereby preventing the beverage (liquid) contained in the container body 2 from leaking into the inside of the liquid passage hole 12 through the gap 15a, past the lid gasket 21, and through the gap S.

[0094] Furthermore, in the cover unit 1 of this embodiment, as Figure 6 As shown, the groove 22 has: an upper wall surface 22a opposite to the upper surface of the cover gasket 21, a lower wall surface 22b opposite to the lower surface of the cover gasket 21, and an inner wall surface 22c that contacts the inner circumferential surface of the cover gasket 21 between the upper wall surface 22a and the lower wall surface 22b.

[0095] The upper wall surface 22a is configured to protrude in the expanding direction compared to the lower wall surface 22b. Specifically, the outer peripheral end of the upper wall surface 22a is located on the outer peripheral side of the base end of the elastic flange portion 21a and on the inner peripheral side of the front end of the elastic flange portion 21a. On the other hand, the outer peripheral end of the lower wall surface 22b is located on the inner peripheral side of the base end of the elastic flange portion 21a. As a result, when the cover gasket 21 is fitted into the groove portion 22, it is difficult to roll it up from the inside of the groove portion 22.

[0096] Therefore, in the cover unit 1 of this embodiment, as Figure 6 As shown, even when the lidded container 100 falls in an inverted state, it can prevent the beverage contained in the container body 2 from pressing the lid gasket 21 due to the impact of colliding with the ground or the like, thereby preventing the lid gasket 21 from shifting from the groove 22.

[0097] In addition, in the cap unit 1 of this embodiment, the lower surface protrusion 14c blocks the gap S between the aforementioned plug 18 and the cap body 8, thereby suppressing the beverage press cap gasket 21 housed in the container body 2.

[0098] As described above, the lid unit 1 of this embodiment can maintain the airtightness of the liquid passage 12. Therefore, by providing such a lid unit 1, the ease of use of the lidded container 100 of this embodiment can be further improved.

[0099] Furthermore, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0100] For example, the aforementioned cover unit 1 can also be equipped with Figure 7 and Figure 8 The structure of the other sealing washer 14A is shown. Furthermore... Figure 7 This is a cross-sectional view showing the structure of the water-stop washer 14A. Figure 8 This is a cross-sectional view of the cover unit 1 with the water-stopping gasket 14A installed.

[0101] Specifically, such as Figure 7 As shown, the water-stopping washer 14A has an upwardly curved portion 14d formed by bending the front end side of the lower surface protrusion 14c upwards.

[0102] like Figure 8 As shown, in the cover unit 1 with the water-stopping washer 14A installed, with the central plug 18 blocking the liquid passage 12, the upward bending portion 14d elastically deforms while the lower surface side protrusion 14c comes into full contact with the outer periphery of the bottom wall portion 18a of the central plug 18.

[0103] With this structure, the tightness of the lower surface protrusion 14c relative to the outer periphery of the bottom wall portion 18a of the central bolt 18 can be improved.

[0104] On the other hand, the aforementioned cover unit 1 can also be equipped with Figure 9 and Figure 10 The structure of the other sealing washer 14B is shown. Furthermore... Figure 9 This is a cross-sectional view showing the structure of the water-stop washer 14B. Figure 10 This is a cross-sectional view of the cover unit 1 with the water-stopping gasket 14B installed.

[0105] Specifically, such as Figure 9 As shown, the water-stopping washer 14B has a downwardly curved portion 14e formed by bending the front end of the lower surface protrusion 14c downwards.

[0106] like Figure 10 As shown, in the cover unit 1 with the water-stopping washer 14B installed, with the central plug 18 blocking the liquid passage 12, the lower surface protrusion 14c contacts the outer periphery of the bottom wall portion 18a of the central plug 18 throughout the entire circumference, and the downwardly curved portion 14e separates from the lower surface of the central plug 18.

[0107] With this structure, the downwardly bent portion 14e of the water-stop washer 14B can be easily removed. Therefore, the water-stop washer 14 can be easily removed from the central bolt 18 (cover 9).

[0108] Furthermore, the aforementioned water-stopping washers 14, 14A, and 14B can also be configured such that, with the central plug 18 blocking the liquid passage 12, the lower surface protrusion 14c is separated from the outer periphery of the bottom wall portion 18a of the central plug 18, and when the beverage contained in the container body 2 is pressed, the lower surface protrusion 14c elastically deforms and comes into contact with the outer periphery of the lower surface of the central plug 18.

[0109] Furthermore, in the above embodiments, a covered container 100 with heat preservation and cold preservation functions is illustrated by the container body 2 having the above-described vacuum insulation structure, but the present invention can be applied to covered containers having a container body without a vacuum insulation structure.

Claims

1. A cover unit, characterized in that, have: The cap body is detachably installed on the neck of the container body with an upper opening, and is provided with a liquid passage hole communicating with the inside of the container body. The cover body is detachably mounted relative to the cover body and is provided with an outer cover covering the outer side of the cover body and a middle plug that blocks the liquid passage when embedded in the inner side of the cover body. A water-stop gasket, which, when installed on the outer periphery of the lower end side of the cover body, seals the inner side of the container body with the cover body; and A cover gasket, when installed on the outer periphery of the middle bolt, seals the inner side of the cover body against the middle bolt. The water-stop washer has a protruding portion on its lower surface that seals the gap between the central bolt and the cover body. The protrusion on the lower surface side is configured to protrude in the diameter reduction direction compared to the lower end of the cover body. With the plug blocking the fluid passage, the protrusion on the lower surface is in full circumference contact with the bottom wall of the lower surface constituting the plug.

2. The cover unit according to claim 1, characterized in that, The lower surface side protrusion has a curved portion formed by its front end side bending upwards.

3. The cover unit according to claim 1, characterized in that, The lower surface side protrusion has a curved portion formed by its front end side bending downwards.

4. The cover unit according to any one of claims 1 to 3, characterized in that, The cover body can be easily installed and removed from the cover body by screwing together the internal thread portion provided on the inner periphery of the cover body and the external thread portion provided on the outer periphery of the middle bolt.

5. A container with a lid, characterized in that, have: The cover unit according to any one of claims 1 to 3; and The container body for mounting the cover unit.

Images